Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
bo sach » co sach
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
cac tu » cac thu, cach tu, cac du
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((bo sach) OR (hoc sach)) y nang x hoi. hieu va cac tu va thanh vi van triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bo sach) OR (hoc sach)) y nang x hoi. hieu va cac tu va thanh vi van triet".
• Adding a wildcard symbol may retrieve word variants: ((bo sach) OR (hoc sach)) y nang x hoi. hieu va cac tu va thanh vi van triet*.